// SENIOR_SOFTWARE_ENGINEER · FULL_STACK_ARCHITECT

SUDIPTA_MONDAL

// FULL_STACK_ARCHITECT
8+ YEARS BUILDING SCALABLE SAAS · REACT.JS / VUE.JS · PYTHON · AWS
100K+ CONCURRENT USERS · 12+ PRODUCTS SHIPPED
WHAT_I_OFFER

SERVICES & PACKAGES

01 / SERVICE
[SaaS]
Full-Stack SaaS Build
End-to-end SaaS product development — from architecture to deployment. I handle every layer so you can focus on the product.
Nuxt.js / Vue.js / React frontend
NestJS / Node.js backend APIs
Multi-tenant database architecture
AWS infrastructure + CI/CD
Auth, billing (Stripe), notifications
// STARTING FROM DISCOVERY CALL
02 / SERVICE
[API]
Backend API & Systems
High-performance, scalable backend systems. REST or GraphQL. Optimized for throughput, reliability, and maintainability.
REST / GraphQL API design & build
Real-time with Socket.io / WebRTC
Database design & optimization
Microservices & event-driven arch
Redis caching, queues, pub/sub
// FIXED SCOPE OR RETAINER
03 / SERVICE
[OPS]
DevOps & Cloud Setup
Production-grade cloud infrastructure. Automated deployments, zero-downtime, observability. Built for teams that ship fast.
AWS architecture design
Docker / Kubernetes orchestration
Terraform infrastructure as code
CI/CD pipelines (GitHub Actions)
Monitoring, logging, alerting
// ONE-TIME OR ONGOING
04 / SERVICE
[INT]
Integrations & Automation
Connect your stack. Automate your ops. From Shopify to Stripe to custom AI pipelines — I wire it all together.
Shopify / eCommerce integrations
Payment gateway implementations
n8n / Zapier automation flows
AI agent workflow development
Third-party API integrations
// PER PROJECT
05 / SERVICE
[OPT]
Performance Audit & Fix
Slow app? I diagnose and fix. LCP, TTFB, database N+1s, memory leaks — I find the bottleneck and eliminate it.
Core Web Vitals audit & fixes
SSR / SSG optimization
Database query optimization
CDN, caching layer setup
Load testing & profiling
// AUDIT STARTS FIXED PRICE
06 / SERVICE
[CTO]
Fractional CTO
Technical leadership for startups without a full-time CTO. I align engineering with product vision and keep the team shipping.
Architecture decision-making
Technical hiring & code review
Roadmap & sprint planning
Vendor & tooling evaluation
Investor technical due diligence
// MONTHLY RETAINER
SELECTED_WORK

PROJECT MATRIX

08 / PROJECTS
TASKGRID
01 / FEATURED
TASKGRID
All-in-one project & task management SaaS — boards, real-time collaboration, analytics, automation, team communication. Scaled to 100k+ concurrent users.
Nuxt.jsNestJSMongoDBPostgreSQLRedisSocket.ioAWS
PENGINE
03
PENGINE
Next-gen print-on-demand SaaS. Shopify integration, bulk mockup generation, wallets, enterprise APIs.
Nuxt.jsNestJSClickHouseShopify
RENDER ENGINE
04
RENDER ENGINE
GPU-powered SaaS generating ultra-realistic product mockups at scale. Eliminated manual bulk workflows.
Nuxt.jsGPU RenderGraphQLAWS
CRAFT MUSIC
05 / FEATURED
CRAFT MUSIC
Real-time global music lesson platform. Audio-optimized WebRTC, timezone-aware scheduling, live chat, subscriptions & payments worldwide.
Nuxt.jsNestJSWebRTCGetStreamDockerAWS
EGSHOP.IO
06
EGSHOP.IO
Multi-tenant eCommerce SaaS for Bangladeshi merchants. Local payments, logistics, multi-store management.
Node.jsMongoDBRedisDocker
ESELFMADE
07
ESELFMADE
EdTech SaaS — course discovery, automated payments, progress tracking, centralized admin ops.
Nuxt.jsNode.jsPostgreSQLAWS
FORECASTING — ACI
08
FORECASTING — ACI
Enterprise automation replacing Excel. Multi-year production & budget analytics with real-time dashboards.
React.jsPythonFastAPIPostgreSQL
CLIENT_TESTIMONIALS

WHAT CLIENTS SAY

UPWORK
Sudipta delivered a complete SaaS platform on time and beyond expectations. The architecture was clean, scalable, and well-documented. Truly a senior-level engineer who thinks like a product owner.
JK
JAMES K.
// FOUNDER · TASKGRID
DIRECT
The WebRTC implementation for our music platform was flawless. Sub-100ms latency globally, zero audio artefacts. He handled the entire infrastructure from scratch. Highly recommend for real-time systems.
SM
SARAH M.
// CTO · CRAFT MUSIC
LINKEDIN
Replaced our entire Excel forecasting workflow with a robust system in 8 weeks. The dashboard is intuitive and the automation saves our team 20+ hours a week. Exceptional problem-solver.
RA
RAHMAN A.
// VP OPERATIONS · ACI GROUP
UPWORK
Outstanding Shopify app development. Deep API knowledge, clean code, deployed to production without a single issue. Responded quickly and adapted to our changing requirements throughout.
TW
TOM W.
// CO-FOUNDER · ECOMMERCE BRAND
DIRECT
Sudipta rebuilt our backend from a monolith to microservices in a way that caused zero downtime. Our system now handles 10x the load with the same infrastructure costs. Remarkable engineering.
NI
NADIA I.
// CEO · EGSHOP.IO
LINKEDIN
As our Fractional CTO, Sudipta helped us go from MVP to Series A in 9 months. He made smart architectural decisions early that saved us enormous refactor costs down the line. A rare find.
MH
MARK H.
// FOUNDER · B2B SAAS STARTUP
CAREER_HISTORY

EXPERIENCE LOG

Lead Systems Architect
// EGSHOP.IO · PENGINE · BOOSTUGC · RENDER ENGINE
Designed and delivered 5+ multi-tenant SaaS platforms from 0→1, handling 100k+ concurrent users
Reduced 12% LCP on flagship product via SSR micro-optimizations and CDN architecture
Built GPU-accelerated mockup generation pipeline processing millions of assets per month
Led distributed teams of 6–12 engineers across product, platform, and DevOps streams
CURRENT2022–26
Senior Backend Engineer
// TASKGRID · CRAFT MUSIC · ESELFMADE
Architected real-time collaboration engine using Socket.io + Redis Pub/Sub for 100k+ users
Built WebRTC audio-optimized lesson platform with sub-100ms latency globally
Automated n8n/Zapier workflows cutting manual ops by 70% across 3 platforms
3 YRS2019–22
Full-Stack Developer
// CAMPUS AUTOMATION · ACI GROUP · SHOPIFY APPS
Built campus management system digitizing admissions, exams, payroll for 5000+ users
Replaced Excel-based enterprise forecasting with real-time FastAPI + React dashboards
Shipped 3 Shopify apps — product grouping, collection duplicator, memberships
3 YRS2016–19
TECH_CAPABILITIES

SYSTEM ARCHITECTURE STACK

Full stack with depth in frontend performance, distributed backend systems, and cloud infrastructure.

Every layer chosen for scalability — from the component to the cluster.



PROFICIENCY_LEVEL
FRONTEND96%
BACKEND94%
DEVOPS88%
Rx
React.js TypeScript
Nx
Nuxt.js Vue 3
Ns
NestJS Node.js
Py
Python FastAPI
Pg
PostgreSQL MongoDB
Rd
Redis ClickHouse
Aw
AWS Docker
Tf
Terraform CI/CD
Rt
Socket.io WebRTC
Sh
Shopify API
n8
n8n Zapier
Gq
GraphQL REST
INITIATE_CONTACT

READY TO
DEPLOY
YOUR VISION?

Available for senior engineering roles, SaaS builds, DevOps setups, and Fractional CTO engagements. Let's architect something that scales.

// SEND_MESSAGE